Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa5f04f8675121a…

MALICIOUS

PDF

36.9 KB Created: 2020-04-04 09:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: eb61da77ae55665249e9fcddf0084444 SHA-1: 7291e0cae9095822f6b6dc88b1e3dc31bb3df825 SHA-256: 1fa5f04f8675121ad64cbc36d9092b87e24d11a06dff3cd78f938f1c6d4a1e7c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains a large number of external links to other PDF files hosted on various domains, indicative of a link farm. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves directing users to these external resources, which could host further malicious content or be part of an SEO manipulation scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://40yearsintoa20yearjob.info/uploads/1/3/0/5/130590380/130590380.html#examples+of+paschal+mystery+in+everyday+life
    • http://donerboyz.com/uploads/1/3/1/3/131383581/zadoxuborubagaxived.pdf
    • http://overandabovehomeinspections.com/uploads/1/3/0/4/130489914/87c1b1f08765.pdf
    • http://lovefornatureart.com/uploads/1/3/0/3/130323535/0839550a.pdf
    • http://provoloneproduction.com/uploads/1/3/0/7/130739038/8e6f7e20d.pdf
    • http://asylumofbrokendolls.com/uploads/1/3/1/4/131437554/0d0bde48b608d65.pdf
    • http://elliesinclair.com/uploads/1/3/0/6/130621432/4302690.pdf
    • http://jordanslawncare.net/uploads/1/3/0/4/130483801/6246dd81921c.pdf
    • http://coloradohomecleaningservices.com/uploads/1/3/0/2/130271229/levavamugosoraf.pdf
    • http://egomeum.com/uploads/1/3/0/5/130588976/dekalunijimeti_nenasagejusola_dukuzef_lebejiwa.pdf
    • http://tasteetreetcb.com/uploads/1/3/0/8/130813999/xuketadakovegurizoza.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068d7.bin
72fd577b53c0d7f58886883ce3b967ced981a55fb4247d1bbfdc5e38758c20c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68D7 7712 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.